Some students counted anal sex, oral sex or mutual masturbation - with partners ranging from significant others to "hookups" - while others adjusted the location to include study rooms in Mann Library or library bathrooms.

But even as casual sex — often called "hookups" or "friends with benefits" — is a dominant part of campus life, a new report by the National Center for Health Statistics indicates the percentages of men and women 18-24 who say they are virgins also are increasing.

We followed the EVA preparation checklist pretty much to the letter, just the way we had done during training exercises—that is, the hookups and where we put equipment—and the checks were done precisely as per our checklist.